Home / 102,001.20-153,001.80-70,508.40

Finding the Fourth Proportional to 102,001.20, 153,001.80 and 70,508.40

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Solution

The fourth proportional to 102,001.20, 153,001.80 and 70,508.40 is: 105,762.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,001.20 : 153,001.80 = 70,508.40 : x
  2. Step 2: Convert to fraction form
    102,001.20/153,001.80 = 70,508.40/x
  3. Step 3: Cross multiply
    102,001.20x = 153,001.80 × 70,508.40
  4. Step 4: Simplify right side
    102,001.20x = 10,787,912,115.12
  5. Step 5: Solve for x
    x = 10,787,912,115.12/102,001.20
  6. Step 6: Final answer
    x = 105,762.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.